Knocking at very high rpm?!
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From: Simi Valley, CA.
Knocking at very high rpm?! Ok fellas, i'm having trouble tracking down a high rpm knock. I changed the plugs, wires, fuel filter, cleaned injectors, fuel system, MAF, and AIT sensors.
It wasn't doing it for a while and it seems like the cold weather brought a knock with it. What do you think it could be other than that lame diagnosis?
It wasn't doing it for a while and it seems like the cold weather brought a knock with it. What do you think it could be other than that lame diagnosis?
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Joined: Aug 2006
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From: Knappa, Oregon
[QUOTE=Formula413;10595234]I'm assuming you run premium of course. /QUOTE]
That's right. If you are using regular or plus look no further for your problem until you run a few tanks of premium through it. And then always use the highest octane gas available to you.
That's right. If you are using regular or plus look no further for your problem until you run a few tanks of premium through it. And then always use the highest octane gas available to you.
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From: Simi Valley, CA.
Always run 76 brand 91 octane. Not sure if a i have a vaccum leak, i tried checking all the lines even spraying them w/ brake clean to see if the idle fluttered. Got nothing out of that. No abnormal oil consumption. My old Z used to eat oil like a fat chick with a 1gl. bucket of Haggen Daz though so i know the signs of that one.
I'll try the fuel pressure tester. Think my fuel pump might be going out? It does have over 100K on it.....
though so i know the signs of that one. I'll try the fuel pressure tester. Think my fuel pump might be going out? It does have over 100K on it.....
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If you suspect it of pinging, how is the fuel pressure/volume?
Sure it's not the motor internally?
I see your in cali, on the far side could also be a busted cat, since you have to run them there.... Seen that mimic the noise of spark knock before.
Sure it's not the motor internally?
I see your in cali, on the far side could also be a busted cat, since you have to run them there.... Seen that mimic the noise of spark knock before.
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